MC68HC908KX2CP Freescale Semiconductor, MC68HC908KX2CP Datasheet - Page 133

• Manufacturer Part Number: MC68HC908KX2CP
• Description: IC MCU 2K FLASH 8MHZ SCI 16-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908KX2CP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 13
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

RPF — Reception-in-Progress Flag Bit
12.7.6 SCI Data Register
The SCI data register (SCDR) is the buffer between the internal data bus and the receive and transmit
shift registers. Reset has no effect on data in the SCI data register.
R7/T7–R0/T0 — Receive/Transmit Data Bits
12.7.7 SCI Baud Rate Register
The baud rate register (SCBR) selects the baud rate for both the receiver and the transmitter.
Freescale Semiconductor
the SCDR. Once cleared, BKF can become set again only after 1s again appear on the RxD pin
followed by another break character. Reset clears the BKF bit.
This read-only bit is set when the receiver detects a 0 during the RT1 time period of the start bit search.
RPF does not generate an interrupt request. RPF is reset after the receiver detects false start bits
(usually from noise or a baud rate mismatch), or when the receiver detects an idle character. Polling
RPF before disabling the SCI module or entering stop mode can show whether a reception is in
progress.
Reading address $0018 accesses the read-only received data bits, R7–R0. Writing to address $0018
writes the data to be transmitted, T7–T0. Reset has no effect on the SCI data register.
1 = Break character detected
0 = No break character detected
1 = Reception in progress
0 = No reception in progress
Address:
Address:
Do not use read-modify-write instructions on the SCI data register.
Reset:
Reset:
Read:
Read:
Write:
Write:
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 Data Sheet, Rev. 2.1
$0018
$0019
Bit 7
Bit 7
R7
T7
0
0
Figure 12-17. SCI Baud Rate Register (SCBR)
= Unimplemented
Figure 12-16. SCI Data Register (SCDR)
R6
T6
6
6
0
0
SCP1
R5
T5
5
5
0
NOTE
Unaffected by reset
SCP0
R4
T4
R
4
4
0
= Reserved
R3
T3
R
3
3
0
SCR2
R2
T2
2
2
0
SCR1
R1
T1
1
1
0
SCR0
Bit 0
Bit 0
R0
T0
0
I/O Registers
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